Dust collector device



Nov. 6, 1962 MYLTING DUST COLLECTOR DEVICE Filed Oct. 18. 1960 UnitedStates Patent Office 3,061,994 Patented Nov. 6, 1962 3,061,994 DUSTCGLLECTOR DEVICE Lanritz E. Myiting, Ardmore, Pa., assignor to The AllenSherman Hoff Company, Wynnewood, Pa., a corpora-v tion of PennsylvaniaFiled (ict. 18, 196), Ser. No. 63,288 3 Claims. (Cl. 55-346) outertubes, it has been customary to provide a lower deck which carried theouter tubes and which was carried by the upper end of the solidscollecting hopper, a conduit to carry gases to and from said tubes, and,between the inlet and outlet of the gas carrying duct, to provide anupper deck which suspended the inner tubes with their lower end portionsprojecting into the outer tubes. It has been proposed to provide tubeswith flanges which were to be welded together to form the lower deck.

These prior devices possessed certain disadvantages. For example, when alower deck plate was used it was dimcult and expensive to align the tubereceiving openings in the upper and lower decks so closely that theinner and outer tubes would be concentric. If the flanges of the outertubes were to be welded together, the aligning problem would beaggravated by the tendency of the welded flanges to warp, distort orshift the position of the outer tubes out of alignment with the innertubes. Moreover, the assembly of the tubes in the two decks orreplacement of any of the tubes could not be carried out effectively orefficiently in the field.

The present invention aims to overcome those disadvantages and achievesthat aim by means of a new simplied and less expensive construction.

The entire steel deck which supported the outer tubes in prior devicesis eliminated together with the aligning problem inherent therewith, andthe new combined inner and outer tube units may be more easily installedeither in the shop or in the field and individual tube units may beeasily replaced without disturbing adjacent tube units. Also the newtube units can be nested more closely than in prior devices and hencemore tubes and more gas cleaning capacity is provided in a given space.These advantages are novel and afford considerable economies inconstruction and operation.

The present invention will be better understood from the followingspecification and the accompanying drawings in which:

FiGURE 1 is a fragmentary, vertical sectional view of one form ofapparatus embodying the present inven tion;

FiGURE 2 is a fragmentary plan view taken on line 2--2 of FIGURE 1; and

FIGURE 3 is a fragmentary side elevational View of one of the flangedtubes of FIGURES 1 and 2.

The drawings show a cyclone unit including a collecting hopper 1 whichis rectangular in horizontal section in its upper portion and has abottom discharge opening (not shown), a conduit 2 for conducting gasesto and from the hopper and a bafe 3 which is spaced above the top of thehopper and which divides the conduit 2 into an inlet chamber 5 and anoutlet chamber 6.

Means is provided in the upper part of the hopper for separating linesolids from gases flowing through conduit 2 and chamber 5. This meansincludes a plurality of tube units, each consisting of an inner tube 10and an outer tube 11. Each inner tube extends down through the bale 3and at its upper end is supported thereby, as by ring 12, and at itslower end projects into the upper end of the outer tube 11 and isconnected thereto. Thus each tube unit is supported solely from baille3.

The inner tube is of smaller diameter than the outer tube and thus anannular space is provided between the tubes of each unit through whichgases and solids may flow downwardly. Preferably, means is provided ineach annular space for giving the descending gases a swirling motion tofacilitate the separation of the solids from the gases. The illustratedmeans for producing this swirling action is the spiral vane 13 which isconnected to the inner tube, spans the annular space and is connected tothe outer tube. The lower ends of the outer tubes 11 are preferablyfrusto-conical, as indicated at 14.

Means is provided for insuring that substantially all flow of gases intoor out of the hopper will take place through the tube units. This means,as illustrated, comprises llanges 16 attached to, and extendingoutwardly from, the upper ends of the outer tubes 11, a filler 17closing the upper end of the hopper around the several tube units andresting on ange 18 of the hopper; and packing filling the spaced betweenthe adjacent flanges and between the flanges of the outermost tube unitsand the ller. Each flange 16 is provided with an encircling groove 19 inwhich suitable packing 20, such as asbestos rope and the like, isdisposed and a corresponding groove is provided in the filler tocooperate with the grooves in the adjacent flanges. When the tube unitsare assembled in filler 17, and the packing 20 lills and is compressedin the opposed grooves 19 of the flanges and filler, the flow of gasesbetween the several flanges and between the flanges and the filler willbe substantially prevented.

Preferably, the flanges 16 are hexagonal and the filler 17 isrectangular to lit the top of the hopper, as shown in FIGURE 2, but theflanges may be of any desired configuration, and the hopper may also beof any desired horizontal cross sectional shape.

Having thus described this invention in such full, clear, concise andexact terms as to enable any person skilled in the art to which itpertains to make and use the same, and having set forth the best modecontemplated of carrying out this invention, I state that the subjectmatter which I regard as being my invention is particularly pointed outand distinctly claimed in what is claimed, it being understood thatequivalents or modifications of, or substitutions for, parts of theabove specifically described embodiment of the invention may be madewithout departing from the scope of the invention as set forth in whatis claimed.

What is claimed is:

1. Apparatus for removing line solids from gases comprising a collectinghopper, a conduit for conducting gases to and from the upper end of saidhopper, a baille spaced from the top of the hopper and dividing theconduit into inlet and outlet chambers, means including a plurality oftube units in the upper part of the hopper for separating iine solidsfrom gases flowing through said inlet chamber, each of said unitsincluding an inner tube supported by and extending down through saidbaille and into said hopper, and an outer tube secured to the lower endportion of the inner tube and defining an annular space about the innertube, and means for insuring that substantially all the gases flowingthrough the conduit will pass through said units, said flow-insuringmeans including flanges extending outwardly from the upper end portionsof the outer tubes, a gas impervious filler closing the upper end of thehopper and surrounding the tube units and packing between the severalanges and between the filler and the flanges adjacent thereto.

2. Apparatus for removing fine solids from gases comprising a collectinghopper, a conduit for conducting gases to and from the upper end of saidhopper, a bale spaced from the top of the hopper and dividing theconduit into inlet and outlet chambers, means including a plurality oftube units in the upper part of the hopper for separating fine solidsfrom gases tlowing through said inlet chamber, each of said unitsincluding an inner tube supported by and extending down through saidbale and into said hopper, an outer tube around the lower end portion ofthe inner tube and defining an annular space about the latter, and aspiral vane spanning said space and connecting the two tubes together,and means for insuring that substantially all the gases owing in theconduit will pass through said units, said flow-insuring means includinganges extending outwardly from the upper end portions of the outertubes, a gas impervious filler closing the upper end of the hopper andsurrounding the tube units and packing between the several anges andbetween the iller and the anges adjacent thereto.

3. Apparatus for removing tine solids from gases comprising a collectinghopper, a conduit for conducting gases to and from the upper end of saidhopper, a bale spaced from the top of the hopper and dividing theconduit into inlet and outlet chambers, means including a plurality oftube units in the upper part of the hopper for separating ne solids fromgases owing through said conduit, each of said units including an innertube supported by and extending down through said bale and into thehopper and an outer tube in the hopper, secured to the lower end portionof the inner tube and defining an annular space about the latter,flanges extending outwardly from the upper ends of said outer tubes andhaving peripheral grooves for packing, a gas impervious l'ler closingthe upper end of the hopper, surrounding the tube units and having agroove in its inner periphery, and packing filling said grooves andserving to prevent ow of gases between the flanges and between theflanges and ller.

References Cited in the file of this patent UNITED STATES PATENTS1,909,184 Lissman May 16, 1933 2,662,610 Heinrich Dec. 15, 19532,904,130 Chapler Sept. 15, 1959

